So, the fusing is all finished. I put the ironing board down near the end where I usually have the sewing machine. Then I put it down several notches. And bit by bit I pulled the top across the ironing board and fused the pieces on. Phew!
And now I am working on the layering.
Actually, looking at it here, I might use the back, which you can see, as the part that is visible because it is less vibrant. Although people don't see the back and front together, it just feels better to have something that isn't going to fight with the front.